<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索、添加区域 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <!-- clear：清空搜索输入框，触发函数，获取列表 -->
          <el-input
            placeholder="查找用户"
            v-model="queryInfo.query"
            @keydown.native="getUserList"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <!-- scope.row代表这一行对应的数据 -->
            <!-- change：switch 状态发生变化时的回调函数    返回新状态的值 -->
            <el-switch
              v-model="scope.row.mg_state"
              inactive-color="#ff4949"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改 -->
            <!-- enterable	鼠标是否可进入到 tooltip 中 -->
            <el-tooltip
              effect="dark"
              content="修改角色"
              placement="top-start"
              :enterable="false"
            >
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!-- 删除 -->
            <el-tooltip
              effect="dark"
              content="删除角色"
              placement="top-start"
              :enterable="false"
            >
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!-- 分配角色 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top-start"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <!-- 
            size-change：切换每条显示多少页的下拉菜单会触发函数
                page-sizes：下拉菜单中的选项
                page-size：当前情况下每页显示多少条数据
            current-change：页码值发生变化会触发函数
            current-page：当前显示的是第几页
            total：总共有多少条数据
        -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 8, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <!-- 
      visible.sync：用来控制对话框的显示与隐藏
      close：对话框关闭时触发函数
     -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <!-- 
        model：数据绑定
        rules：验证规则
        ref：引用名称
       -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
        class="demo-ruleForm"
      >
        <!-- 
        prop：验证规则的属性
       -->
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editClose"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="提示"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前用户：{{ userInfo.username }}</p>
        <p>当前角色：{{ userInfo.role_name }}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    //自定义验证邮箱的规则
    var cheackEmail = (rule, value, callback) => {
      //验证邮箱的正则
      let regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) {
        return callback();
      }
      callback(new Error("请输入合法的邮箱"));
    };

    //自定义验证手机号的规则
    var cheackMobile = (rule, value, callback) => {
      //验证手机号的正则
      let regMobile =
        /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
      if (regMobile.test(value)) {
        return callback();
      }
      callback(new Error("请输入合法的手机号"));
    };

    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "",
        //当前的页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 10,
      },
      userList: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 2,
            max: 10,
            message: "用户名长度在3~10个字符之间",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名长度在6~12个字符之间",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          //validator用来指定校验规则
          { validator: cheackEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: cheackMobile, trigger: "blur" },
        ],
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: cheackEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: cheackMobile, trigger: "blur" },
        ],
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      rolesList: [],
      //已选中的角色Id值
      selectedRoleId: "",
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    //获取用户列表数据
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200)
        return this.$message.error("获取用户列表失败");
      //console.log(res);
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    //监听pagesize改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    //监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    //监听switch开关的状态
    async userStateChanged(userinfo) {
      //console.log(userinfo);
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error("操作失败");
      }
      this.$message.success("操作成功");
    },
    //监听添加用户对话框关闭事件
    addDialogClosed() {
      /* this.$refs.addFormRef.resetFields(); */
    },
    //点击按钮添加新用户的表单预验证
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        //校验失败
        if (!valid) return;
        //校验成功，可发起请求
        const { data: res } = await this.$http.post("users", this.addForm);
        if (res.meta.status !== 201) {
          this.$message.error("添加失败");
        }
        this.$message.success("添加成功");
        //隐藏添加用户的表单框
        this.addDialogVisible = false;
        //重新获取用户列表数据
        this.getUserList();
        this.$refs.addFormRef.resetFields();
      });
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("查询数据失败");
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    //监听修改用户对话框的关闭事件
    editClose() {
      /* this.$refs.editFormRef.resetFields(); */
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        //预验证成功，发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile,
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("更新信息失败");
        }
        this.editDialogVisible = false; //关闭对话框
        this.getUserList(); //刷新数据
        return this.$message.success("更新信息success");
      });
    },
    //根据ID删除对应用户
    async removeUserById(id) {
      //弹框询问
      /* 
        $confirm：
          第一个参数：提示消息
          第二个参数：标题的文本
          第三个参数：配置对象（用来指定确定、取消按钮的文本，以及通过type来修改前面的小图标）
        此函数的返回值是promise
      */
      const confirmResult = await this.$confirm("确定删除此用户?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).catch((err) => err);
      //若确认删除，返回值是字符串comfirm，若点击取消，则返回值是字符串cancel
      if (confirmResult !== "confirm") {
        return this.$message.info("取消删除");
      } else {
        const { data: res } = await this.$http.delete("users/" + id);
        if (res.meta.status !== 200) {
          return this.$message.error("删除失败");
        }
        this.getUserList();
        return this.$message.success("删除success");
      }
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;

      //在展示对话框之前，获取所有角色列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取失败");
      }
      this.rolesList = res.data;

      this.setRoleDialogVisible = true;
    },
    //点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error("请选择要分配的角色");
      }
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId,
        }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("更新失败，稍后再试");
      }
      this.$message.success("更新成功");
      this.getUserList();
      this.setRoleDialogVisible = false;
    },
    //监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = "";
      this.userInfo = {};
    },
  },
};
</script>

<style lang='less' scoped>
</style>